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dataqueue/queuearray: Make public API again

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These are actually used outside of coreelements nowadays.
Also hide lots of internals and add padding and documentation.
This commit is contained in:
Sebastian Dröge 2012-10-22 10:13:20 +02:00
parent ebbce54583
commit 09982c3c13
14 changed files with 457 additions and 253 deletions
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2
docs/libs/gstreamer-libs-docs.sgml
View file

@ -45,6 +45,8 @@
<xi:include href="xml/gstbytewriter.xml" />
<xi:include href="xml/gstcollectpads.xml" />
<xi:include href="xml/gsttypefindhelper.xml" />
<xi:include href="xml/gstdataqueue.xml" />
<xi:include href="xml/gstqueuearray.xml" />
</chapter>
<chapter id="gstreamer-control">

47
docs/libs/gstreamer-libs-sections.txt
View file

@ -711,6 +711,53 @@ gst_type_find_helper_get_range_ext
<SUBSECTION Private>
</SECTION>
<SECTION>
<FILE>gstdataqueue</FILE>
<TITLE>GstDataQueue</TITLE>
<INCLUDE>gst/base/gstdataqueue.h</INCLUDE>
GstDataQueue
GstDataQueueSize
GstDataQueueCheckFullFunction
GstDataQueueItem
GstDataQueueEmptyCallback
GstDataQueueFullCallback
gst_data_queue_new
gst_data_queue_push
gst_data_queue_pop
gst_data_queue_flush
gst_data_queue_set_flushing
gst_data_queue_drop_head
gst_data_queue_is_full
gst_data_queue_is_empty
gst_data_queue_get_level
gst_data_queue_limits_changed
<SUBSECTION Standard>
GstDataQueueClass
GST_DATA_QUEUE
GST_IS_DATA_QUEUE
GST_TYPE_DATA_QUEUE
GST_DATA_QUEUE_CLASS
GST_IS_DATA_QUEUE_CLASS
<SUBSECTION Private>
gst_data_queue_get_type
</SECTION>
<SECTION>
<FILE>gstqueuearray</FILE>
<TITLE>GstQueueArray</TITLE>
<INCLUDE>gst/base/gstqueuearray.h</INCLUDE>
GstQueueArray
gst_queue_array_new
gst_queue_array_free
gst_queue_array_get_length
gst_queue_array_pop_head
gst_queue_array_peek_head
gst_queue_array_push_tail
gst_queue_array_is_empty
gst_queue_array_drop_element
gst_queue_array_find
</SECTION>
# net
<SECTION>

4
libs/gst/base/Makefile.am
View file

@ -12,7 +12,9 @@ libgstbase_@GST_API_VERSION@_la_SOURCES = \
gstbytereader.c \
gstbytewriter.c \
gstcollectpads.c \
gstdataqueue.c \
gstpushsrc.c \
gstqueuearray.c \
gsttypefindhelper.c
libgstbase_@GST_API_VERSION@_la_CFLAGS = $(GST_OBJ_CFLAGS)
@ -32,7 +34,9 @@ libgstbase_@GST_API_VERSION@include_HEADERS = \
gstbytereader.h \
gstbytewriter.h \
gstcollectpads.h \
gstdataqueue.h \
gstpushsrc.h \
gstqueuearray.h \
gsttypefindhelper.h
noinst_HEADERS = \

259
plugins/elements/gstdataqueue.c → libs/gst/base/gstdataqueue.c
View file

@ -31,6 +31,7 @@
#include <gst/gst.h>
#include "string.h"
#include "gstdataqueue.h"
#include "gstqueuearray.h"
#include "gst/glib-compat-private.h"
GST_DEBUG_CATEGORY_STATIC (data_queue_debug);
@ -48,18 +49,38 @@ enum
enum
{
ARG_0,
ARG_CUR_LEVEL_VISIBLE,
ARG_CUR_LEVEL_BYTES,
ARG_CUR_LEVEL_TIME
PROP_0,
PROP_CUR_LEVEL_VISIBLE,
PROP_CUR_LEVEL_BYTES,
PROP_CUR_LEVEL_TIME
/* FILL ME */
};
struct _GstDataQueuePrivate
{
/* the array of data we're keeping our grubby hands on */
GstQueueArray *queue;
GstDataQueueSize cur_level; /* size of the queue */
GstDataQueueCheckFullFunction checkfull; /* Callback to check if the queue is full */
gpointer *checkdata;
GMutex qlock; /* lock for queue (vs object lock) */
gboolean waiting_add;
GCond item_add; /* signals buffers now available for reading */
gboolean waiting_del;
GCond item_del; /* signals space now available for writing */
gboolean flushing; /* indicates whether conditions where signalled because
* of external flushing */
GstDataQueueFullCallback fullcallback;
GstDataQueueEmptyCallback emptycallback;
};
#define GST_DATA_QUEUE_MUTEX_LOCK(q) G_STMT_START { \
GST_CAT_LOG (data_queue_dataflow, \
"locking qlock from thread %p", \
g_thread_self ()); \
g_mutex_lock (&q->qlock); \
g_mutex_lock (&q->priv->qlock); \
GST_CAT_LOG (data_queue_dataflow, \
"locked qlock from thread %p", \
g_thread_self ()); \
@ -67,7 +88,7 @@ enum
#define GST_DATA_QUEUE_MUTEX_LOCK_CHECK(q, label) G_STMT_START { \
GST_DATA_QUEUE_MUTEX_LOCK (q); \
if (q->flushing) \
if (q->priv->flushing) \
goto label; \
} G_STMT_END
@ -75,7 +96,7 @@ enum
GST_CAT_LOG (data_queue_dataflow, \
"unlocking qlock from thread %p", \
g_thread_self ()); \
g_mutex_unlock (&q->qlock); \
g_mutex_unlock (&q->priv->qlock); \
} G_STMT_END
#define STATUS(q, msg) \
@ -84,10 +105,10 @@ enum
"bytes, %"G_GUINT64_FORMAT \
" ns, %u elements", \
queue, \
q->cur_level.visible, \
q->cur_level.bytes, \
q->cur_level.time, \
q->queue.length)
q->priv->cur_level.visible, \
q->priv->cur_level.bytes, \
q->priv->cur_level.time, \
gst_queue_array_get_length (q->priv->queue))
static void gst_data_queue_finalize (GObject * object);
@ -96,7 +117,6 @@ static void gst_data_queue_set_property (GObject * object,
static void gst_data_queue_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec);
static GObjectClass *parent_class = NULL;
static guint gst_data_queue_signals[LAST_SIGNAL] = { 0 };
#define _do_init \
@ -107,7 +127,7 @@ static guint gst_data_queue_signals[LAST_SIGNAL] = { 0 };
"dataflow inside the data queue object"); \
}
#define parent_class gst_data_queue_parent_class
G_DEFINE_TYPE_WITH_CODE (GstDataQueue, gst_data_queue, G_TYPE_OBJECT, _do_init);
static void
@ -115,7 +135,7 @@ gst_data_queue_class_init (GstDataQueueClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
g_type_class_add_private (klass, sizeof (GstDataQueuePrivate));
gobject_class->set_property = gst_data_queue_set_property;
gobject_class->get_property = gst_data_queue_get_property;
@ -150,16 +170,16 @@ gst_data_queue_class_init (GstDataQueueClass * klass)
g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
/* properties */
g_object_class_install_property (gobject_class, ARG_CUR_LEVEL_BYTES,
g_object_class_install_property (gobject_class, PROP_CUR_LEVEL_BYTES,
g_param_spec_uint ("current-level-bytes", "Current level (kB)",
"Current amount of data in the queue (bytes)",
0, G_MAXUINT, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, ARG_CUR_LEVEL_VISIBLE,
g_object_class_install_property (gobject_class, PROP_CUR_LEVEL_VISIBLE,
g_param_spec_uint ("current-level-visible",
"Current level (visible items)",
"Current number of visible items in the queue", 0, G_MAXUINT, 0,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, ARG_CUR_LEVEL_TIME,
g_object_class_install_property (gobject_class, PROP_CUR_LEVEL_TIME,
g_param_spec_uint64 ("current-level-time", "Current level (ns)",
"Current amount of data in the queue (in ns)", 0, G_MAXUINT64, 0,
G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
@ -170,22 +190,26 @@ gst_data_queue_class_init (GstDataQueueClass * klass)
static void
gst_data_queue_init (GstDataQueue * queue)
{
queue->cur_level.visible = 0; /* no content */
queue->cur_level.bytes = 0; /* no content */
queue->cur_level.time = 0; /* no content */
queue->priv =
G_TYPE_INSTANCE_GET_PRIVATE (queue, GST_TYPE_DATA_QUEUE,
GstDataQueuePrivate);
queue->checkfull = NULL;
queue->priv->cur_level.visible = 0; /* no content */
queue->priv->cur_level.bytes = 0; /* no content */
queue->priv->cur_level.time = 0; /* no content */
g_mutex_init (&queue->qlock);
g_cond_init (&queue->item_add);
g_cond_init (&queue->item_del);
gst_queue_array_init (&queue->queue, 50);
queue->priv->checkfull = NULL;
g_mutex_init (&queue->priv->qlock);
g_cond_init (&queue->priv->item_add);
g_cond_init (&queue->priv->item_del);
queue->priv->queue = gst_queue_array_new (50);
GST_DEBUG ("initialized queue's not_empty & not_full conditions");
}
/**
* gst_data_queue_new_full:
* gst_data_queue_new:
* @checkfull: the callback used to tell if the element considers the queue full
* or not.
* @fullcallback: the callback which will be called when the queue is considered full.
@ -197,10 +221,11 @@ gst_data_queue_init (GstDataQueue * queue)
* or @emptycallback.
*
* Returns: a new #GstDataQueue.
*
* Since: 1.2.0
*/
GstDataQueue *
gst_data_queue_new_full (GstDataQueueCheckFullFunction checkfull,
gst_data_queue_new (GstDataQueueCheckFullFunction checkfull,
GstDataQueueFullCallback fullcallback,
GstDataQueueEmptyCallback emptycallback, gpointer checkdata)
{
@ -209,41 +234,28 @@ gst_data_queue_new_full (GstDataQueueCheckFullFunction checkfull,
g_return_val_if_fail (checkfull != NULL, NULL);
ret = g_object_newv (GST_TYPE_DATA_QUEUE, 0, NULL);
ret->checkfull = checkfull;
ret->checkdata = checkdata;
ret->fullcallback = fullcallback;
ret->emptycallback = emptycallback;
ret->priv->checkfull = checkfull;
ret->priv->checkdata = checkdata;
ret->priv->fullcallback = fullcallback;
ret->priv->emptycallback = emptycallback;
return ret;
}
/**
* gst_data_queue_new:
* @checkfull: the callback used to tell if the element considers the queue full
* or not.
* @checkdata: a #gpointer that will be given in the @checkfull callback.
*
* Returns: a new #GstDataQueue.
*/
GstDataQueue *
gst_data_queue_new (GstDataQueueCheckFullFunction checkfull, gpointer checkdata)
{
return gst_data_queue_new_full (checkfull, NULL, NULL, checkdata);
}
static void
gst_data_queue_cleanup (GstDataQueue * queue)
{
while (!gst_queue_array_is_empty (&queue->queue)) {
GstDataQueueItem *item = gst_queue_array_pop_head (&queue->queue);
GstDataQueuePrivate *priv = queue->priv;
while (!gst_queue_array_is_empty (priv->queue)) {
GstDataQueueItem *item = gst_queue_array_pop_head (priv->queue);
/* Just call the destroy notify on the item */
item->destroy (item);
}
queue->cur_level.visible = 0;
queue->cur_level.bytes = 0;
queue->cur_level.time = 0;
priv->cur_level.visible = 0;
priv->cur_level.bytes = 0;
priv->cur_level.time = 0;
}
/* called only once, as opposed to dispose */
@ -251,18 +263,19 @@ static void
gst_data_queue_finalize (GObject * object)
{
GstDataQueue *queue = GST_DATA_QUEUE (object);
GstDataQueuePrivate *priv = queue->priv;
GST_DEBUG ("finalizing queue");
gst_data_queue_cleanup (queue);
gst_queue_array_clear (&queue->queue);
gst_queue_array_free (priv->queue);
GST_DEBUG ("free mutex");
g_mutex_clear (&queue->qlock);
g_mutex_clear (&priv->qlock);
GST_DEBUG ("done free mutex");
g_cond_clear (&queue->item_add);
g_cond_clear (&queue->item_del);
g_cond_clear (&priv->item_add);
g_cond_clear (&priv->item_del);
G_OBJECT_CLASS (parent_class)->finalize (object);
}
@ -270,25 +283,31 @@ gst_data_queue_finalize (GObject * object)
static inline void
gst_data_queue_locked_flush (GstDataQueue * queue)
{
GstDataQueuePrivate *priv = queue->priv;
STATUS (queue, "before flushing");
gst_data_queue_cleanup (queue);
STATUS (queue, "after flushing");
/* we deleted something... */
if (queue->waiting_del)
g_cond_signal (&queue->item_del);
if (priv->waiting_del)
g_cond_signal (&priv->item_del);
}
static inline gboolean
gst_data_queue_locked_is_empty (GstDataQueue * queue)
{
return (queue->queue.length == 0);
GstDataQueuePrivate *priv = queue->priv;
return (gst_queue_array_get_length (priv->queue) == 0);
}
static inline gboolean
gst_data_queue_locked_is_full (GstDataQueue * queue)
{
return queue->checkfull (queue, queue->cur_level.visible,
queue->cur_level.bytes, queue->cur_level.time, queue->checkdata);
GstDataQueuePrivate *priv = queue->priv;
return priv->checkfull (queue, priv->cur_level.visible,
priv->cur_level.bytes, priv->cur_level.time, priv->checkdata);
}
/**
@ -298,6 +317,8 @@ gst_data_queue_locked_is_full (GstDataQueue * queue)
* Flushes all the contents of the @queue. Any call to #gst_data_queue_push and
* #gst_data_queue_pop will be released.
* MT safe.
*
* Since: 1.2.0
*/
void
gst_data_queue_flush (GstDataQueue * queue)
@ -316,6 +337,8 @@ gst_data_queue_flush (GstDataQueue * queue)
* MT safe.
*
* Returns: #TRUE if @queue is empty.
*
* Since: 1.2.0
*/
gboolean
gst_data_queue_is_empty (GstDataQueue * queue)
@ -338,6 +361,8 @@ gst_data_queue_is_empty (GstDataQueue * queue)
* MT safe.
*
* Returns: #TRUE if @queue is full.
*
* Since: 1.2.0
*/
gboolean
gst_data_queue_is_full (GstDataQueue * queue)
@ -363,20 +388,24 @@ gst_data_queue_is_full (GstDataQueue * queue)
* all calls to those two functions will return #FALSE.
*
* MT Safe.
*
* Since: 1.2.0
*/
void
gst_data_queue_set_flushing (GstDataQueue * queue, gboolean flushing)
{
GstDataQueuePrivate *priv = queue->priv;
GST_DEBUG ("queue:%p , flushing:%d", queue, flushing);
GST_DATA_QUEUE_MUTEX_LOCK (queue);
queue->flushing = flushing;
priv->flushing = flushing;
if (flushing) {
/* release push/pop functions */
if (queue->waiting_add)
g_cond_signal (&queue->item_add);
if (queue->waiting_del)
g_cond_signal (&queue->item_del);
if (priv->waiting_add)
g_cond_signal (&priv->item_add);
if (priv->waiting_del)
g_cond_signal (&priv->item_del);
}
GST_DATA_QUEUE_MUTEX_UNLOCK (queue);
}
@ -397,10 +426,14 @@ gst_data_queue_set_flushing (GstDataQueue * queue, gboolean flushing)
* is returned, the caller is responsible for freeing @item and its contents.
*
* Returns: #TRUE if the @item was successfully pushed on the @queue.
*
* Since: 1.2.0
*/
gboolean
gst_data_queue_push (GstDataQueue * queue, GstDataQueueItem * item)
{
GstDataQueuePrivate *priv = queue->priv;
g_return_val_if_fail (GST_IS_DATA_QUEUE (queue), FALSE);
g_return_val_if_fail (item != NULL, FALSE);
@ -411,32 +444,32 @@ gst_data_queue_push (GstDataQueue * queue, GstDataQueueItem * item)
/* We ALWAYS need to check for queue fillness */
if (gst_data_queue_locked_is_full (queue)) {
GST_DATA_QUEUE_MUTEX_UNLOCK (queue);
if (G_LIKELY (queue->fullcallback))
queue->fullcallback (queue, queue->checkdata);
if (G_LIKELY (priv->fullcallback))
priv->fullcallback (queue, priv->checkdata);
else
g_signal_emit (queue, gst_data_queue_signals[SIGNAL_FULL], 0);
GST_DATA_QUEUE_MUTEX_LOCK_CHECK (queue, flushing);
/* signal might have removed some items */
while (gst_data_queue_locked_is_full (queue)) {
queue->waiting_del = TRUE;
g_cond_wait (&queue->item_del, &queue->qlock);
queue->waiting_del = FALSE;
if (queue->flushing)
priv->waiting_del = TRUE;
g_cond_wait (&priv->item_del, &priv->qlock);
priv->waiting_del = FALSE;
if (priv->flushing)
goto flushing;
}
}
gst_queue_array_push_tail (&queue->queue, item);
gst_queue_array_push_tail (priv->queue, item);
if (item->visible)
queue->cur_level.visible++;
queue->cur_level.bytes += item->size;
queue->cur_level.time += item->duration;
priv->cur_level.visible++;
priv->cur_level.bytes += item->size;
priv->cur_level.time += item->duration;
STATUS (queue, "after pushing");
if (queue->waiting_add)
g_cond_signal (&queue->item_add);
if (priv->waiting_add)
g_cond_signal (&priv->item_add);
GST_DATA_QUEUE_MUTEX_UNLOCK (queue);
@ -462,10 +495,14 @@ flushing:
* MT safe.
*
* Returns: #TRUE if an @item was successfully retrieved from the @queue.
*
* Since: 1.2.0
*/
gboolean
gst_data_queue_pop (GstDataQueue * queue, GstDataQueueItem ** item)
{
GstDataQueuePrivate *priv = queue->priv;
g_return_val_if_fail (GST_IS_DATA_QUEUE (queue), FALSE);
g_return_val_if_fail (item != NULL, FALSE);
@ -475,33 +512,33 @@ gst_data_queue_pop (GstDataQueue * queue, GstDataQueueItem ** item)
if (gst_data_queue_locked_is_empty (queue)) {
GST_DATA_QUEUE_MUTEX_UNLOCK (queue);
if (G_LIKELY (queue->emptycallback))
queue->emptycallback (queue, queue->checkdata);
if (G_LIKELY (priv->emptycallback))
priv->emptycallback (queue, priv->checkdata);
else
g_signal_emit (queue, gst_data_queue_signals[SIGNAL_EMPTY], 0);
GST_DATA_QUEUE_MUTEX_LOCK_CHECK (queue, flushing);
while (gst_data_queue_locked_is_empty (queue)) {
queue->waiting_add = TRUE;
g_cond_wait (&queue->item_add, &queue->qlock);
queue->waiting_add = FALSE;
if (queue->flushing)
priv->waiting_add = TRUE;
g_cond_wait (&priv->item_add, &priv->qlock);
priv->waiting_add = FALSE;
if (priv->flushing)
goto flushing;
}
}
/* Get the item from the GQueue */
*item = gst_queue_array_pop_head (&queue->queue);
*item = gst_queue_array_pop_head (priv->queue);
/* update current level counter */
if ((*item)->visible)
queue->cur_level.visible--;
queue->cur_level.bytes -= (*item)->size;
queue->cur_level.time -= (*item)->duration;
priv->cur_level.visible--;
priv->cur_level.bytes -= (*item)->size;
priv->cur_level.time -= (*item)->duration;
STATUS (queue, "after popping");
if (queue->waiting_del)
g_cond_signal (&queue->item_del);
if (priv->waiting_del)
g_cond_signal (&priv->item_del);
GST_DATA_QUEUE_MUTEX_UNLOCK (queue);
@ -530,6 +567,8 @@ is_of_type (gconstpointer a, gconstpointer b)
* Pop and unref the head-most #GstMiniObject with the given #GType.
*
* Returns: TRUE if an element was removed.
*
* Since: 1.2.0
*/
gboolean
gst_data_queue_drop_head (GstDataQueue * queue, GType type)
@ -537,25 +576,24 @@ gst_data_queue_drop_head (GstDataQueue * queue, GType type)
gboolean res = FALSE;
GstDataQueueItem *leak = NULL;
guint idx;
GstDataQueuePrivate *priv = queue->priv;
g_return_val_if_fail (GST_IS_DATA_QUEUE (queue), FALSE);
GST_DEBUG ("queue:%p", queue);
GST_DATA_QUEUE_MUTEX_LOCK (queue);
idx =
gst_queue_array_find (&queue->queue, is_of_type, GINT_TO_POINTER (type));
idx = gst_queue_array_find (priv->queue, is_of_type, GINT_TO_POINTER (type));
if (idx == -1)
goto done;
leak = queue->queue.array[idx];
gst_queue_array_drop_element (&queue->queue, idx);
leak = gst_queue_array_drop_element (priv->queue, idx);
if (leak->visible)
queue->cur_level.visible--;
queue->cur_level.bytes -= leak->size;
queue->cur_level.time -= leak->duration;
priv->cur_level.visible--;
priv->cur_level.bytes -= leak->size;
priv->cur_level.time -= leak->duration;
leak->destroy (leak);
@ -575,16 +613,20 @@ done:
*
* Inform the queue that the limits for the fullness check have changed and that
* any blocking gst_data_queue_push() should be unblocked to recheck the limts.
*
* Since: 1.2.0
*/
void
gst_data_queue_limits_changed (GstDataQueue * queue)
{
GstDataQueuePrivate *priv = queue->priv;
g_return_if_fail (GST_IS_DATA_QUEUE (queue));
GST_DATA_QUEUE_MUTEX_LOCK (queue);
if (queue->waiting_del) {
if (priv->waiting_del) {
GST_DEBUG ("signal del");
g_cond_signal (&queue->item_del);
g_cond_signal (&priv->item_del);
}
GST_DATA_QUEUE_MUTEX_UNLOCK (queue);
}
@ -595,11 +637,15 @@ gst_data_queue_limits_changed (GstDataQueue * queue)
* @level: the location to store the result
*
* Get the current level of the queue.
*
* Since: 1.2.0
*/
void
gst_data_queue_get_level (GstDataQueue * queue, GstDataQueueSize * level)
{
memcpy (level, (&queue->cur_level), sizeof (GstDataQueueSize));
GstDataQueuePrivate *priv = queue->priv;
memcpy (level, (&priv->cur_level), sizeof (GstDataQueueSize));
}
static void
@ -618,18 +664,19 @@ gst_data_queue_get_property (GObject * object,
guint prop_id, GValue * value, GParamSpec * pspec)
{
GstDataQueue *queue = GST_DATA_QUEUE (object);
GstDataQueuePrivate *priv = queue->priv;
GST_DATA_QUEUE_MUTEX_LOCK (queue);
switch (prop_id) {
case ARG_CUR_LEVEL_BYTES:
g_value_set_uint (value, queue->cur_level.bytes);
case PROP_CUR_LEVEL_BYTES:
g_value_set_uint (value, priv->cur_level.bytes);
break;
case ARG_CUR_LEVEL_VISIBLE:
g_value_set_uint (value, queue->cur_level.visible);
case PROP_CUR_LEVEL_VISIBLE:
g_value_set_uint (value, priv->cur_level.visible);
break;
case ARG_CUR_LEVEL_TIME:
g_value_set_uint64 (value, queue->cur_level.time);
case PROP_CUR_LEVEL_TIME:
g_value_set_uint64 (value, priv->cur_level.time);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);

42
plugins/elements/gstdataqueue.h → libs/gst/base/gstdataqueue.h
View file

@ -24,7 +24,6 @@
#define __GST_DATA_QUEUE_H__
#include <gst/gst.h>
#include "gstqueuearray.h"
G_BEGIN_DECLS
#define GST_TYPE_DATA_QUEUE \
@ -41,6 +40,7 @@ typedef struct _GstDataQueue GstDataQueue;
typedef struct _GstDataQueueClass GstDataQueueClass;
typedef struct _GstDataQueueSize GstDataQueueSize;
typedef struct _GstDataQueueItem GstDataQueueItem;
typedef struct _GstDataQueuePrivate GstDataQueuePrivate;
/**
* GstDataQueueItem:
@ -66,6 +66,9 @@ struct _GstDataQueueItem
/* user supplied destroy function */
GDestroyNotify destroy;
/* < private > */
gpointer _gst_reserved[GST_PADDING];
};
/**
@ -113,24 +116,8 @@ struct _GstDataQueue
GObject object;
/*< private >*/
/* the array of data we're keeping our grubby hands on */
GstQueueArray queue;
GstDataQueueSize cur_level; /* size of the queue */
GstDataQueueCheckFullFunction checkfull; /* Callback to check if the queue is full */
gpointer *checkdata;
GMutex qlock; /* lock for queue (vs object lock) */
gboolean waiting_add;
GCond item_add; /* signals buffers now available for reading */
gboolean waiting_del;
GCond item_del; /* signals space now available for writing */
gboolean flushing; /* indicates whether conditions where signalled because
* of external flushing */
GstDataQueueFullCallback fullcallback;
GstDataQueueEmptyCallback emptycallback;
/* gpointer _gst_reserved[GST_PADDING]; */
GstDataQueuePrivate *priv;
gpointer _gst_reserved[GST_PADDING];
};
struct _GstDataQueueClass
@ -141,47 +128,32 @@ struct _GstDataQueueClass
void (*empty) (GstDataQueue * queue);
void (*full) (GstDataQueue * queue);
/* gpointer _gst_reserved[GST_PADDING]; */
gpointer _gst_reserved[GST_PADDING];
};
G_GNUC_INTERNAL
GType gst_data_queue_get_type (void);
G_GNUC_INTERNAL
GstDataQueue * gst_data_queue_new (GstDataQueueCheckFullFunction checkfull,
gpointer checkdata) G_GNUC_MALLOC;
G_GNUC_INTERNAL
GstDataQueue * gst_data_queue_new_full (GstDataQueueCheckFullFunction checkfull,
GstDataQueueFullCallback fullcallback,
GstDataQueueEmptyCallback emptycallback,
gpointer checkdata) G_GNUC_MALLOC;
G_GNUC_INTERNAL
gboolean gst_data_queue_push (GstDataQueue * queue, GstDataQueueItem * item);
G_GNUC_INTERNAL
gboolean gst_data_queue_pop (GstDataQueue * queue, GstDataQueueItem ** item);
G_GNUC_INTERNAL
void gst_data_queue_flush (GstDataQueue * queue);
G_GNUC_INTERNAL
void gst_data_queue_set_flushing (GstDataQueue * queue, gboolean flushing);
G_GNUC_INTERNAL
gboolean gst_data_queue_drop_head (GstDataQueue * queue, GType type);
G_GNUC_INTERNAL
gboolean gst_data_queue_is_full (GstDataQueue * queue);
G_GNUC_INTERNAL
gboolean gst_data_queue_is_empty (GstDataQueue * queue);
G_GNUC_INTERNAL
void gst_data_queue_get_level (GstDataQueue * queue, GstDataQueueSize *level);
G_GNUC_INTERNAL
void gst_data_queue_limits_changed (GstDataQueue * queue);
G_END_DECLS

183
plugins/elements/gstqueuearray.c → libs/gst/base/gstqueuearray.c
View file

@ -19,31 +19,82 @@
* Boston, MA 02111-1307, USA.
*/
/**
* SECTION:gstqueuearray
* @short_description: Array based queue object
*
* #GstQueueArray is an object that provides standard queue functionality
* based on an array instead of linked lists. This reduces the overhead
* caused by memory managment by a large factor.
*/
#include <string.h>
#include <gst/gst.h>
#include "gstqueuearray.h"
void
gst_queue_array_init (GstQueueArray * array, guint initial_size)
struct _GstQueueArray
{
array->size = initial_size;
array->array = g_new0 (gpointer, initial_size);
array->head = 0;
array->tail = 0;
array->length = 0;
}
/* < private > */
gpointer *array;
guint size;
guint head;
guint tail;
guint length;
};
/**
* gst_queue_array_new:
* @initial_size: Initial size of the new queue
*
* Allocates a new #GstQueueArray object with an initial
* queue size of @initial_size.
*
* Returns: a new #GstQueueArray object
*
* Since: 1.2.0
*/
GstQueueArray *
gst_queue_array_new (guint initial_size)
{
GstQueueArray *array;
array = g_new (GstQueueArray, 1);
gst_queue_array_init (array, initial_size);
array = g_slice_new (GstQueueArray);
array->size = initial_size;
array->array = g_new0 (gpointer, initial_size);
array->head = 0;
array->tail = 0;
array->length = 0;
return array;
}
/**
* gst_queue_array_free:
* @array: a #GstQueueArray object
*
* Frees queue @array and all memory associated to it.
*
* Since: 1.2.0
*/
void
gst_queue_array_free (GstQueueArray * array)
{
g_free (array->array);
g_slice_free (GstQueueArray, array);
}
/**
* gst_queue_array_pop_head:
* @array: a #GstQueueArray object
*
* Returns and head of the queue @array and removes
* it from the queue.
*
* Returns: The head of the queue
*
* Since: 1.2.0
*/
gpointer
gst_queue_array_pop_head (GstQueueArray * array)
{
@ -59,6 +110,35 @@ gst_queue_array_pop_head (GstQueueArray * array)
return ret;
}
/**
* gst_queue_array_pop_head:
* @array: a #GstQueueArray object
*
* Returns and head of the queue @array and does not
* remove it from the queue.
*
* Returns: The head of the queue
*
* Since: 1.2.0
*/
gpointer
gst_queue_array_peek_head (GstQueueArray * array)
{
/* empty array */
if (G_UNLIKELY (array->length == 0))
return NULL;
return array->array[array->head];
}
/**
* gst_queue_array_push_tail:
* @array: a #GstQueueArray object
* @data: object to push
*
* Pushes @data to the tail of the queue @array.
*
* Since: 1.2.0
*/
void
gst_queue_array_push_tail (GstQueueArray * array, gpointer data)
{
@ -102,43 +182,56 @@ gst_queue_array_push_tail (GstQueueArray * array, gpointer data)
array->length++;
}
/**
* gst_queue_array_is_empty:
* @array: a #GstQueueArray object
*
* Checks if the queue @array is empty.
*
* Returns: %TRUE if the queue @array is empty
*
* Since: 1.2.0
*/
gboolean
gst_queue_array_is_empty (GstQueueArray * array)
{
return (array->length == 0);
}
void
gst_queue_array_clear (GstQueueArray * array)
{
g_free (array->array);
}
void
gst_queue_array_free (GstQueueArray * array)
{
gst_queue_array_clear (array);
g_free (array);
}
void
/**
* gst_queue_array_drop_element:
* @array: a #GstQueueArray object
* @idx: index to drop
*
* Drops the queue element at position @idx from queue @array.
*
* Returns: the dropped element
*
* Since: 1.2.0
*/
gpointer
gst_queue_array_drop_element (GstQueueArray * array, guint idx)
{
gpointer element;
if (idx == array->head) {
/* just move the head */
element = array->array[idx];
array->head++;
array->head %= array->size;
return;
return element;
}
if (idx == array->tail - 1) {
/* just move the tail */
element = array->array[idx];
array->tail = (array->tail - 1 + array->size) % array->size;
return;
return element;
}
/* drop the element #idx... and readjust the array */
if (array->head < array->tail) {
/* Make sure it's within the boundaries */
g_assert (array->head < idx && idx <= array->tail);
element = array->array[idx];
/* ends not wrapped */
/* move head-idx to head+1 */
memcpy (&array->array[array->head + 1],
@ -147,21 +240,39 @@ gst_queue_array_drop_element (GstQueueArray * array, guint idx)
} else {
/* ends are wrapped */
if (idx < array->tail) {
element = array->array[idx];
/* move idx-tail backwards one */
memcpy (&array->array[idx - 1],
&array->array[idx], (array->tail - idx) * sizeof (gpointer));
array->tail--;
} else if (idx >= array->head) {
element = array->array[idx];
/* move head-idx forwards one */
memcpy (&array->array[array->head],
&array->array[array->head + 1],
(idx - array->head) * sizeof (gpointer));
array->head++;
} else
} else {
g_assert_not_reached ();
element = NULL;
}
}
return element;
}
/**
* gst_queue_array_find:
* @array: a #GstQueueArray object
* @func: comparison function
* @data: data for comparison function
*
* Finds an element in the queue @array by comparing every element
* with @func and returning the index of the found element.
*
* Returns: Index of the found element or -1 if nothing was found.
*
* Since: 1.2.0
*/
guint
gst_queue_array_find (GstQueueArray * array, GCompareFunc func, gpointer data)
{
@ -173,3 +284,19 @@ gst_queue_array_find (GstQueueArray * array, GCompareFunc func, gpointer data)
return i;
return -1;
}
/**
* gst_queue_array_get_length:
* @array: a #GstQueueArray object
*
* Returns the length of the queue @array
*
* Returns: the length of the queue @array.
*
* Since: 1.2.0
*/
guint
gst_queue_array_get_length (GstQueueArray * array)
{
return array->length;
}

50
libs/gst/base/gstqueuearray.h Normal file
View file

@ -0,0 +1,50 @@
/* GStreamer
* Copyright (C) 2009-2010 Edward Hervey <bilboed@bilboed.com>
*
* gstqueuearray.h:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <glib.h>
#ifndef __GST_QUEUE_ARRAY_H__
#define __GST_QUEUE_ARRAY_H__
typedef struct _GstQueueArray GstQueueArray;
GstQueueArray * gst_queue_array_new (guint initial_size);
void gst_queue_array_free (GstQueueArray * array);
gpointer gst_queue_array_pop_head (GstQueueArray * array);
gpointer gst_queue_array_peek_head (GstQueueArray * array);
void gst_queue_array_push_tail (GstQueueArray * array,
gpointer data);
gboolean gst_queue_array_is_empty (GstQueueArray * array);
gpointer gst_queue_array_drop_element (GstQueueArray * array,
guint idx);
guint gst_queue_array_find (GstQueueArray * array,
GCompareFunc func,
gpointer data);
guint gst_queue_array_get_length (GstQueueArray * array);
#endif

4
plugins/elements/Makefile.am
View file

@ -15,9 +15,7 @@ libgstcoreelements_la_SOURCES = \
gstidentity.c \
gstinputselector.c \
gstoutputselector.c \
gstdataqueue.c \
gstmultiqueue.c \
gstqueuearray.c \
gstqueue.c \
gstqueue2.c \
gsttee.c \
@ -43,9 +41,7 @@ noinst_HEADERS = \
gstidentity.h \
gstinputselector.h \
gstoutputselector.h \
gstdataqueue.h \
gstmultiqueue.h \
gstqueuearray.h \
gstqueue.h \
gstqueue2.h \
gsttee.h \

2
plugins/elements/gstmultiqueue.c
View file

@ -1983,7 +1983,7 @@ gst_single_queue_new (GstMultiQueue * mqueue, guint id)
sq->mqueue = mqueue;
sq->srcresult = GST_FLOW_FLUSHING;
sq->pushed = FALSE;
sq->queue = gst_data_queue_new_full ((GstDataQueueCheckFullFunction)
sq->queue = gst_data_queue_new ((GstDataQueueCheckFullFunction)
single_queue_check_full,
(GstDataQueueFullCallback) single_queue_overrun_cb,
(GstDataQueueEmptyCallback) single_queue_underrun_cb, sq);

2
plugins/elements/gstmultiqueue.h
View file

@ -24,7 +24,7 @@
#define __GST_MULTI_QUEUE_H__
#include <gst/gst.h>
#include "gstdataqueue.h"
#include <gst/base/gstdataqueue.h>
G_BEGIN_DECLS

30
plugins/elements/gstqueue.c
View file

@ -92,7 +92,7 @@ GST_DEBUG_CATEGORY_STATIC (queue_dataflow);
queue->cur_level.time, \
queue->min_threshold.time, \
queue->max_size.time, \
queue->queue.length)
gst_queue_array_get_length (queue->queue))
/* Queue signals and args */
enum
@ -417,7 +417,7 @@ gst_queue_init (GstQueue * queue)
g_cond_init (&queue->item_add);
g_cond_init (&queue->item_del);
gst_queue_array_init (&queue->queue, DEFAULT_MAX_SIZE_BUFFERS * 3 / 2);
queue->queue = gst_queue_array_new (DEFAULT_MAX_SIZE_BUFFERS * 3 / 2);
queue->sinktime = GST_CLOCK_TIME_NONE;
queue->srctime = GST_CLOCK_TIME_NONE;
@ -440,13 +440,13 @@ gst_queue_finalize (GObject * object)
GST_DEBUG_OBJECT (queue, "finalizing queue");
while (!gst_queue_array_is_empty (&queue->queue)) {
data = gst_queue_array_pop_head (&queue->queue);
while (!gst_queue_array_is_empty (queue->queue)) {
data = gst_queue_array_pop_head (queue->queue);
/* FIXME: if it's a query, shouldn't we unref that too? */
if (!GST_IS_QUERY (data))
gst_mini_object_unref (data);
}
gst_queue_array_clear (&queue->queue);
gst_queue_array_free (queue->queue);
g_mutex_clear (&queue->qlock);
g_cond_clear (&queue->item_add);
@ -556,8 +556,8 @@ gst_queue_locked_flush (GstQueue * queue)
{
GstMiniObject *data;
while (!gst_queue_array_is_empty (&queue->queue)) {
data = gst_queue_array_pop_head (&queue->queue);
while (!gst_queue_array_is_empty (queue->queue)) {
data = gst_queue_array_pop_head (queue->queue);
/* Then lose another reference because we are supposed to destroy that
data when flushing */
if (!GST_IS_QUERY (data))
@ -590,7 +590,7 @@ gst_queue_locked_enqueue_buffer (GstQueue * queue, gpointer item)
apply_buffer (queue, buffer, &queue->sink_segment, TRUE, TRUE);
if (item)
gst_queue_array_push_tail (&queue->queue, item);
gst_queue_array_push_tail (queue->queue, item);
GST_QUEUE_SIGNAL_ADD (queue);
}
@ -611,7 +611,7 @@ gst_queue_locked_enqueue_event (GstQueue * queue, gpointer item)
case GST_EVENT_SEGMENT:
apply_segment (queue, event, &queue->sink_segment, TRUE);
/* if the queue is empty, apply sink segment on the source */
if (queue->queue.length == 0) {
if (gst_queue_array_is_empty (queue->queue)) {
GST_CAT_LOG_OBJECT (queue_dataflow, queue, "Apply segment on srcpad");
apply_segment (queue, event, &queue->src_segment, FALSE);
queue->newseg_applied_to_src = TRUE;
@ -625,7 +625,7 @@ gst_queue_locked_enqueue_event (GstQueue * queue, gpointer item)
}
if (item)
gst_queue_array_push_tail (&queue->queue, item);
gst_queue_array_push_tail (queue->queue, item);
GST_QUEUE_SIGNAL_ADD (queue);
}
@ -635,7 +635,7 @@ gst_queue_locked_dequeue (GstQueue * queue)
{
GstMiniObject *item;
item = gst_queue_array_pop_head (&queue->queue);
item = gst_queue_array_pop_head (queue->queue);
if (item == NULL)
goto no_item;
@ -792,9 +792,9 @@ gst_queue_handle_sink_query (GstPad * pad, GstObject * parent, GstQuery * query)
GST_QUEUE_MUTEX_LOCK_CHECK (queue, out_flushing);
GST_LOG_OBJECT (queue, "queuing query %p (%s)", query,
GST_QUERY_TYPE_NAME (query));
gst_queue_array_push_tail (&queue->queue, query);
gst_queue_array_push_tail (queue->queue, query);
GST_QUEUE_SIGNAL_ADD (queue);
while (queue->queue.length != 0) {
while (!gst_queue_array_is_empty (queue->queue)) {
/* for as long as the queue has items, we know the query is
* not handled yet */
GST_QUEUE_WAIT_DEL_CHECK (queue, out_flushing);
@ -822,14 +822,14 @@ gst_queue_is_empty (GstQueue * queue)
{
GstMiniObject *head;
if (queue->queue.length == 0)
if (gst_queue_array_is_empty (queue->queue))
return TRUE;
/* Only consider the queue empty if the minimum thresholds
* are not reached and data is at the queue head. Otherwise
* we would block forever on serialized queries.
*/
head = queue->queue.array[queue->queue.head];
head = gst_queue_array_peek_head (queue->queue);
if (!GST_IS_BUFFER (head) && !GST_IS_BUFFER_LIST (head))
return FALSE;

4
plugins/elements/gstqueue.h
View file

@ -25,7 +25,7 @@
#define __GST_QUEUE_H__
#include <gst/gst.h>
#include "gstqueuearray.h"
#include <gst/base/gstqueuearray.h>
G_BEGIN_DECLS
@ -108,7 +108,7 @@ struct _GstQueue {
gboolean eos;
/* the queue of data we're keeping our grubby hands on */
GstQueueArray queue;
GstQueueArray *queue;
GstQueueSize
cur_level, /* currently in the queue */

61
plugins/elements/gstqueuearray.h
View file

@ -1,61 +0,0 @@
/* GStreamer
* Copyright (C) 2009-2010 Edward Hervey <bilboed@bilboed.com>
*
* gstqueuearray.h:
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <glib.h>
#ifndef __GST_QUEUE_ARRAY_H__
#define __GST_QUEUE_ARRAY_H__
typedef struct _GstQueueArray GstQueueArray;
struct _GstQueueArray
{
gpointer *array;
guint size;
guint head;
guint tail;
guint length;
};
G_GNUC_INTERNAL void gst_queue_array_init (GstQueueArray * array,
guint initial_size);
G_GNUC_INTERNAL void gst_queue_array_clear (GstQueueArray * array);
G_GNUC_INTERNAL GstQueueArray * gst_queue_array_new (guint initial_size);
G_GNUC_INTERNAL gpointer gst_queue_array_pop_head (GstQueueArray * array);
G_GNUC_INTERNAL void gst_queue_array_push_tail (GstQueueArray * array,
gpointer data);
G_GNUC_INTERNAL gboolean gst_queue_array_is_empty (GstQueueArray * array);
G_GNUC_INTERNAL void gst_queue_array_free (GstQueueArray * array);
G_GNUC_INTERNAL void gst_queue_array_drop_element (GstQueueArray * array,
guint idx);
G_GNUC_INTERNAL guint gst_queue_array_find (GstQueueArray * array,
GCompareFunc func,
gpointer data);
#endif

20
win32/common/libgstbase.def
View file

@ -238,7 +238,27 @@ EXPORTS
gst_collect_pads_start
gst_collect_pads_stop
gst_collect_pads_take_buffer
gst_data_queue_drop_head
gst_data_queue_flush
gst_data_queue_get_level
gst_data_queue_get_type
gst_data_queue_is_empty
gst_data_queue_is_full
gst_data_queue_limits_changed
gst_data_queue_new
gst_data_queue_pop
gst_data_queue_push
gst_data_queue_set_flushing
gst_push_src_get_type
gst_queue_array_drop_element
gst_queue_array_find
gst_queue_array_free
gst_queue_array_get_length
gst_queue_array_is_empty
gst_queue_array_new
gst_queue_array_peek_head
gst_queue_array_pop_head
gst_queue_array_push_tail
gst_type_find_helper
gst_type_find_helper_for_buffer
gst_type_find_helper_for_data